671420527 has 4 divisors (see below), whose sum is σ = 672822720. Its totient is φ = 670018336.

The previous prime is 671420513. The next prime is 671420543. The reversal of 671420527 is 725024176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671420527 - 2¹¹ = 671418479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 671420492 and 671420501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671420507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700378 + ... + 701335.

It is an arithmetic number, because the mean of its divisors is an integer number (168205680).

Almost surely, 2^671420527 is an apocalyptic number.

671420527 is a deficient number, since it is larger than the sum of its proper divisors (1402193).

671420527 is a wasteful number, since it uses less digits than its factorization.

671420527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402192.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 671420527 is about 25911.7835549775. The cubic root of 671420527 is about 875.6519884036.

The spelling of 671420527 in words is "six hundred seventy-one million, four hundred twenty thousand, five hundred twenty-seven".